New effect in nonlinear Born-Infeld electrodynamics - art. no. 036004

A new experiment in which the coefficient a(2) of Born-Infeld nonlinear ele ctrodynamics in a vacuum can be measured by using a ring laser is proposed. The dispersion equation and the frequencies of the generated electromagnet ic waves are calculated for waves propagating in the ring laser towards eac h other when a vacuum is generated in one part of the contour and crossed c onstant fields (E) over right arrow(0) and (B) over right arrow 0 similar t o 10(5) G are applied to this region. It is shown that by measuring the dif ference of frequencies of the generated electromagnetic waves in the ring l aser, the coefficient a(2) of Born-Infeld nonlinear electrodynamics can be measured up to an accuracy of a(2)similar to 10(-32) G(-2). A comparison of the predictions of quantum electrodynamics and Born-Infeld electrodynamics concerning the results of the proposed experiment is carried out.